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High Power Laser Diode Driver for Bars, Stacks and Arrays:
- 120 Amp Range in CW Mode
- 240 Amp Range in Quasi-CW Mode
- 40 Volts Compliance Voltage Range

  • High Power QCW Laser Driver Dimensions

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sku / item#: RLS/SF550-120/40
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Key Features
  • QCW Mode Pulse Width Range from 50 µs to 1000 µs
  • CW Output Current up to 120 A
  • Pulsed Output Current up to 240 A
  • Laser Diode Voltage up to 40 VDC
  • Requires 3 Phase AC Input
  • Pulse Rise time < 60 µs
  • Rack Mountable, 4U High Chassis

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MODEL RLS/SF550-120/40
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- Pulse (QCW) mode -
  • QCW Output Current: 1 - 240A
  • Output voltage: 0 - 40V
  • User Set Pulse Rate: 1 - 1000 Hz
  • User Set Pulse Duration: 50 - 1000 μs
  • Pulse Rise and Fall Time: < 60 µs
- CW mode -
  • CW Output Current: 1 - 120 A
  • Output Voltage 0 - 40 V
- General characteristics -
  • Average Output Power: 4.8 kW (max)
  • Cooling: Air Cooled
  • Power Input: Three Phase 220/380 VAC, 50Hz
  • Dimensions: 440 * 177 * 520 mm; 4U
  • Weight: 25kg
Additional information
  • Values Are Limited by Average Power:
    F * V * I * τ ≤ P (pulse mode)
    V * I ≤ P (CW mode)
  • Recommended Length of Laser Diode Connecting Cable : < 1 Meter
  • Remote Control Interface: RS232

Product Overview:

High Voltage CW/QCW Laser Diode Driver Overview

This high power CW / QCW laser diode driver is designed to drive high current laser stacks and arrays. Designed and optimized for use in laboratory, educational, experimental, and industrial settings, the safety features incorporated into the driver include current limit, duty cycle limit, and safety interlocks.

The rack-mounted controller includes an RS232 interface and PC-based software for control. The front-panel provides easy control of the driver, with a large LCD display and adjustment knob .

Versatile Options Increase Driver Functionality

Up to 20 high power CW/QCW laser diode drivers can be used to build the Multichannel Electrical Power Supply System (MEPSS). The MEPSS is designed for applications such as research into inertial confinement fusion, laser-matter interactions, laser diode array testing, and other cases where multiple high power lasers and laser arrays are operated simultaneously.

The laser diode driver can be modified at the factory to include a high power temperature controller for laser temperature stabilization on a TEC-based mounting plate; inquire for options and details.

Additionally, the flexible internal architecture allows for factory customization to suit customer requirements for a specific load. Optionally, the driver can be equipped to operate in a temperature range of –40°C / +50°C.

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